School furniture



(No Modl.) 3 SheetsSheet 1.

W. B. OOGGER. SCHOOL FURNITURE Patented July 12, 1892 (No Model.) 3Sheets- Sheet 2.

W. B. OOGGER.

SCHOOL FURNITURE. q

No. 478,786. Patented July 12, 1892.

(No Model.) 3 Sheets--$heet 3.

W3. GOGGERV SCHOOL EURNITURB.

No. 478,786. Patented July 12, 1892.

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PATENT OFFICE.

WILLIAM B. GOGGER, OF SPRINGFIELD, ILLINOIS.

SCHOOL FURNITURE.

SPECIFICATION forming part of'Letters Patent No. 478,786 dated July 12,1892.

Application filed October 8, 1891.

To all whom it may concern.-

Be it known that I, WILLIAM B. COGGER, of Springfield, in the county ofSangamon, State of Illinois, have invented certain Improvements inSchool Furniture, of which the following is a specification.

This invention relates to improvements in devices for fastening togetherschool-seats or any kind of seat made of wood and iron, and its objectsare to provide means whereby the wooden seat or back may be firmlysecured to the metallic support without the use of screws or nails andat the same time will provide a firm fastening for securing the seat atall points, thereby preventing any loosening of the seat or anysplitting of the wood either when the seat is in use or while it isbeing put together.

The invention consists generally in providing the wood or seat portionwith a continuous groove that is dovetailed or undercut upon both sidesand is provided upon one side with a series of notches and in providingthe metallic support with the continuous rib having upon one side aprojecting flange and upon the other a series of lugs that are arrangedto enter the notches at the side of the groove near the seat portion,whereby upon putting the parts together and giving a slight forwardmovement to the seat portion upon the metallic support the seat will begiven a sidewise movement upon the iron, thereby carrying the continuousflange upon the iron under the continuous undercut portion of one sideof the groove in the seat portion and also carrying the locking-lugs onthe iron under the undercut portion of the other side of the groove, andthereby forming a continuous support and lock for the seat upon thesupporting-iron for substantially the full length of the iron or for thefull length of the continuous flange.

In the accompanying drawings, forming a part of this specification,Figure 1 is a section through the seat, taken on a line close to thesupporting-iron, as indicated by line 1 1, Fig. 8, and showing thewooden or seat portion in section and the supporting-iron in elevation.Fig. 2 is an under side plan view of a portion of the seat. Fig. 3 is aplan view of the supporting-iron, looking toward the side that isbrought next to the wood when the device is "in the drawings.

in use. Fig. 4 is an end elevation of the seat Serial No. 408,102. (Nomodel.)

the side that is provided with a continuous flange. Figs. 6 and 7 aredetail sections on line it osand 3 4 of Fig. 5. Fig. 8 is a detail crosssection of a portion of the seat and supporting-iron, the parts beingshown in dotted lines in the position that they occupy when the'deviceis together and the wooden or seat portion being shown in full linesseparated from the iron, the section upon which this fig ure is takenbeing indicated by the dotted line 8 8 in Fig. 5.

In the drawings, 2 represents the wooden seat portion of ordinaryschool-furniture, or this may represent the back of the seat. Thiswooden portion 2 is preferably of a curved form in cross-section,substantially as shown The wooden portion 2 is provided upon the underor back side with the transversegroove 3. This groove is undercut uponboth sides, substantially as shown in Fig. 8, and one side of saidgroove is continuous, while the other side is provided with a series ofnotches 5, that extend to the bottom of the groove and meet the bottomof the groove preferably at the outer edge of the under-cut. The wallsof these notches are preferably inclined or sloping, as shown in Fig. 2.The supporting-iron 7 has the surface that comes against the wooden seatformed with a similar curve to that of the seat, and.

this iron is provided with a rib 9, extending the full length thereof,and with the flanges 11 and 13 on the opposite sides of the iron at thebase of the rib 9. The rib is provided at one side with a continuousflange 15, which extends nearly the full length of the rib, there beingpreferably a short portion at the end of the rib toward the stop 17,that has no flange 15. At its opposite sidethe rib is provided with aseries of lugs .19, which project therefrom in the same plane as theflange 15. The iron is also provided with the lugs 21, projectingfromthe flange 13 and in the same plane therewith and located just a shortdistance back of the lugs 19, or, in other words, each of the lugs 21 isslightly nearer the stop 17 than the corresponding lug 19, as shown inFig. 3.

The groove 3 is of sufficient width at its narrowest or throat portionto admit the rib 9 and the flange 15 to pass through this portion of thegroove.

In putting the seat or wooden portion upon the iron the seat is placedso that the lugs 19 enter the notches 5 and the rib 9, with the flange15, enters the narrow or throat portion of the groove 3, and then thewooden or seat portion is pushed down over the rib 9. The lugs 19 ridedown the inclined wall of the notches 5, and thereby the flange 15 isforced under the continuous undercut wall of the groove 3, the flanges11 and 13 being brought against the wood at each side of the groove. Theparts will now be in the position shown in Fig. 4:. By giving the seat aslight movement in the direction of the arrow in Fig. 4 the parts willbe brought into the position shown in Fig. 1, with the stop 17 againstthe edge of the Wood or seat portion. The lugs 19 will pass out from thenotches 5 along the groove 3, so as to come under a portion of theundercut wall of the groove 3, thereby securely locking the seat uponthe supporting-iron, the lugs 21 covering the notches 5 and forming abearing for the seat outside and around said notches. I thus providemeans for locking the wood or seat portion upon the iron and at the sametime requiring only a slight movement of the seat to bring the partsinto their final position and when they are in this position having thewood supported at all points by the iron throughout its entire length.

While I have described the invention as particularly applicable forsecuring the wooden seat to its support, it will be understood that theinvention is not limited to a device of this kind, but is clearlyapplicable to securing the backs of the seats to their supporting ironsor for securing any curved wooden surface to its support.

I claim as my invention- 1. The combination, with the seat or woodenportion provided with an undercut groovehaving upon one side a series ofnotches with walls inclined from the top to the bottom and toward thecenter of said groove, of a supporting-iron provided with a rib having acontinuous flange at one side of said rib and a series of lugs at theother adapted to engage said notches and force said flange under thewall of said groove as the rib is inserted in said groove, substantiallyas described.

2. The combination, with the wooden or seat portion with the dovetailedor undercut groove having a continuous wall upon one side and havingupon the other side a series of notches with walls inclined from the topto the bottom and toward the center of the groove, of a supporting-ironprovided with a rib having a continuous flange upon one side and aseries of lugs upon the other adapted to enter the notches in saidgroove and to force the flange under the wall of the groove as the ribis inserted in said groove, whereby the wooden portion may be lookedupon the supporting-iron and be held and supported for the full lengthof the iron.

3. The combination, with the wooden or seat portion provided with theundercut groove having a series of inclined notches 5 in one side, saidnotches being inclined toward the center of the groove, of thesupporting-iron provided with a rib 9, the flange 15 upon one side ofsaid rib andthe lugs 19 uponthe other, and with the flanges 11 and 13and lugs 21, projecting from opposite sides of the base of the rib, saidlugs 19 being adapted to engage said notches and force said flange 15under the wall of the groove as the rib is inserted in the groove,substantially as described.

In testimony whereof I have hereunto set my hand this 29th day ofSeptember, 1891.

WILLIAM B. OOGGER.

In presence of EDWIN A. WILsoN, GERRIT SNYDER.

